Create a class called Beef that extends Cattle This class must have the following private data value per pound (a double) (Error check for values less than or equal to zero.) This class must have the following methods default constructor constructor with parameters for the data Create appropriate accessor and mutator methods to return and modify the private data. setBeef with parameters for the data toString Implement the productionValue method. The is the animal's weight times the value per pound. Remember the animal's weight is part of the health record. Hints Create and test each class one at a time. When you have created all classes, test all classes using the LivestockTester program. Compare your results to the LivestockTester Execution document. Note: The format of the information is based on the values returned from toString. Therefore, your format may differ from the execution document. However, your execution should include all of the information in the execution document. You do not need to change you toString methods to try to match the format of the execution document. Using LivestockTester To use the LivestockTester program, some of your classes must use methods and constructors compatible with the tester method calls. The specifications for the critical methods and constructors is as follows.